Home / 8,579.25-12,868.88-3,385.13

Finding the Fourth Proportional to 8,579.25, 12,868.88 and 3,385.13

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Solution

The fourth proportional to 8,579.25, 12,868.88 and 3,385.13 is: 5,077.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,579.25 : 12,868.88 = 3,385.13 : x
  2. Step 2: Convert to fraction form
    8,579.25/12,868.88 = 3,385.13/x
  3. Step 3: Cross multiply
    8,579.25x = 12,868.88 × 3,385.13
  4. Step 4: Simplify right side
    8,579.25x = 43,562,750.48
  5. Step 5: Solve for x
    x = 43,562,750.48/8,579.25
  6. Step 6: Final answer
    x = 5,077.69

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.